Science defines our lives in every way but it also poses puzzling questions. Is time travel possible? Why do we have two tides in a day? Can global warming be stopped? Why can't we sneeze with our eyes open? Why does milk turn sour? From far-out outer space to the insides of the human body, Science Q and A takes on an assortment of questions about science that young minds like to ponder over. Biman Basu's answers bring together information from the latest research in a clear and accessible format.